Which correctly gives the expression using addition?

14.3 – (–21.2)

a.
14.3 + (–21.2)

b.
14.3 + 21.2

c.
–14.3 + (–21.2)

d.
–14.3 + 21.2

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte